> > Or do I just write nul's to the block or 0's, and it's supposed to do it
> > automatically?  or do I just punt.
> 
> 'dd if=/dev/zero of=/dev/ad1 bs=4k' works great; takes about an hour to
> scrub the entire disk.  Run until clean.  Running it right now in fact.

Err, Umm, I wouldn't assume that drives always know that writes have
failed. Do a read pass too.




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